... or pinworms Merriam Webster's noun Etymology: International Scientific Vocabulary piperidine + azine Date: 1889 a crystalline heterocyclic base C4H10N2 used especially ... Dictionary Piperazine Pi*per"a*zine, n. Also -zin -zin . [Piperidine + azote + -ine.] (Chem.) A crystalline substance, (C2H4NH)2, formed by ...
... Webster's 1913 Dictionary Piperylene Pi*per"y*lene, n. [Piperidine + acetylene.] (Chem.) A hydrocarbon obtained by decomposition of certain piperidine derivatives.
... noun Etymology: perhaps from International Scientific Vocabulary par- (alteration of piperidine) + ox- + methyl + 2-ine Date: 1979 a drug C19H20FNO3 that ...
... s noun Etymology: perhaps from amino + oxi- (alteration of oxy-) + piperidine + -yl Date: 1970 a peripheral vasodilator C9H15N5O used orally to ...
... meperidine, meperidine hydrochloride, Demerol] Merriam Webster's noun Etymology: methyl + piperidine Date: 1947 a synthetic narcotic drug C15H21NO2 used in the ...